CN101437232A - Method for wireless planning and optimizing coarctation telephone traffic region - Google Patents
Method for wireless planning and optimizing coarctation telephone traffic region Download PDFInfo
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- CN101437232A CN101437232A CNA2008100724614A CN200810072461A CN101437232A CN 101437232 A CN101437232 A CN 101437232A CN A2008100724614 A CNA2008100724614 A CN A2008100724614A CN 200810072461 A CN200810072461 A CN 200810072461A CN 101437232 A CN101437232 A CN 101437232A
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Abstract
The invention relates to the technical field of wireless network planning, in particular to a wireless planning and optimizing method for a dense telephone traffic zone. The method comprises the following steps; combining GSM900, GSM1,800 and EGSM in a cell to realize high capacity of a single cell by utilizing Common BCCH technology and absorbing telephone traffic in subarea, classification and multi-level by combining a plurality of station types; according to the needs of speech service and data service in dense telephone zone, making channel allocation in batch for cells in the zone through a growth rate algorithm; according to expected speech service and data service growth rate, acquiring detailed volume expansion and new station demand through a volume expansion new station allocation strategy; according to speed upgrading needs of cell level users, acquiring cell suggestion allocation and new station needs by a user velocity updating demand algorithm; and according to input cell information of dense telephone traffic zone, acquiring relevant telephone traffic and frequency spectrum analysis and comparison of soft capacity upgrading proportion with different functions before and after optimization.
Description
Technical field
The present invention relates to the wireless network planning technical field, particularly a kind of coarctation telephone traffic region wireless planning and optimization method that promotes the network capacity of coarctation telephone traffic region.
Background technology
Along with the raising of mobile phone popularity rate, have higher requirement for inevitably the network load ability of operator.How use existing Internet resources and propose networking planning etc. and become key subject according to business demand at the intensive regional reasonable configuration of traffic.
Draw the required number of channel of speech business for speech business by ErlangB table and corresponding GoS at present; Then draw the required number of channel of data service for data service, draw the required total channel number in sub-district based on the above results again in conjunction with existing network configuring condition decision whether increasing new website by Campbell's algorithm.Can on the basis at the grand station of former GSM900, increase GSM1800 at coarctation telephone traffic region, can more effectively utilize existing site resource to increase network capacity like this; Can increase traffic demand in the independent absorption chamber of the indoor coverage cell of GSM900 at intensive room area.
The key that Campbell's method is calculated is to have introduced the service resource intensity notion, different business is to the situation that the takies difference of Radio Resource, it is more that high speed business takies resource, it is less that the low speed business takies stock number, and campbell model definition service resource intensity reflects the take situation of different business to Radio Resource.
There is following defective in existing plan optimization method: the whole network capacity utilizes limited (promptly on the low side, on the low side to the frequency spectrum resource utilization ratio to the existing site level of resources utilization), owing to all kinds of site type maximum configured of the whole network are not carried out requirement so be restricted easily in optimizing in the later stage, speech business and data service considers to have certain one-sidedness separately, Campbell's algorithm need be got GGSN side miscellaneous service flow proportional and the artificial input in the every sub-district of needs can't calculate in batches.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of coarctation telephone traffic region wireless planning and optimization method are provided, to promote the network capacity of coarctation telephone traffic region.
For realizing above-mentioned goal of the invention, the technical solution used in the present invention is: this coarctation telephone traffic region wireless planning and optimization method promote the network capacity of coarctation telephone traffic region by following steps:
Utilize Common BCCH technology that GSM900, GSM1800 and EGSM are combined in the high power capacity of realizing single sub-district in the sub-district, by the multiple site type sub-category multi-level absorption telephone traffic in subregion that combines;
According to the demand of speech business in the coarctation telephone traffic region and data service, sub-district in the zone is made channel configuration in batches by the growth rate algorithm; Speech business, data service growth rate according to expection draw detailed dilatation and new website demand by dilatation new website collocation strategy;
According to the lifting demand of cell-level user rate, promote demand algorithm by user rate and draw sub-district proposed arrangement and new website demand;
According to the cell information in the coarctation telephone traffic region of input, draw and promote the comparison of ratio from the soft capacity of difference in functionality before and after corresponding traffic and spectrum analysis and the optimization.
Distinguishing feature of the present invention is the deficiency that has remedied existing wireless planning and optimisation technique, analyze the telephone traffic of speech and data service in the time of in batches, provide and optimize suggestion, and to the input the coarctation telephone traffic region sub-district carry out various analyses and calculating, export objective statistics, comprise total area coverage of importing the sub-district, traffic density, the general efficient of frequency, the network soft capacity that is produced under the various functions etc.The output of system is unit with the BTS level of sub-district, after certain algorithm computation, considers in conjunction with the voice-and-data service integration, provides planning and optimizes suggestion.The GoS requirement of all right input dialogue sound of the inventive method, the growth rate of speech, the growth rate of data service provides comprehensive planning and optimizes the output suggestion, and can provide this data channel configuration optimization that has suggestion to the data download enhancing rate desired value of data business.
The present invention is described in further detail below in conjunction with drawings and the specific embodiments.
Description of drawings
Fig. 1 is a network topology configuration schematic diagram among the present invention.
Fig. 2 is the capacity volume variance schematic diagram that Common BCCH technology is brought among the present invention.
Fig. 3 is a channel configuration schematic diagram of the present invention.
Fig. 4 is a growth rate algorithm schematic diagram of the present invention.
Fig. 5 is a PS dilatation judging module algorithm schematic diagram of the present invention.
Fig. 6 is a CS dilatation judging module algorithm schematic diagram of the present invention.
Fig. 7 a is the newly-increased BTS layer preference strategy schematic diagram of macro base station of the present invention.
Fig. 7 b is the newly-increased BTS layer preference strategy schematic diagram in indoor distributed base station of the present invention and station, street.
Fig. 8 is that AMR permeability of the present invention and soft capacity concern schematic diagram.
Fig. 9 is that AMR FR of the present invention and AMR HR concern schematic diagram.
Figure 10 is a sub-district of the present invention distribution situation schematic diagram.
Embodiment
Coarctation telephone traffic region wireless planning of the present invention and optimization method promote the network capacity of coarctation telephone traffic region by following steps:
Utilize Common BCCH technology that GSM900, GSM1800 and EGSM are combined in the high power capacity of realizing single sub-district in the sub-district, by multiple site types such as outdoor grand station, indoor little base station and station, the street sub-category multi-level absorption telephone traffic in subregion that combines; Simultaneously, increase the station, street with further lifting the whole network capacity in the hot spot region, and the TCH frequency of the multiplexing GSM900 of station, street employing RF hopping technology, to improve the utilance of frequency spectrum resource.
According to the demand of speech business in the coarctation telephone traffic region and data service, sub-district in the zone is made channel configuration in batches by the growth rate algorithm; Speech business, data service growth rate according to expection draw detailed dilatation and new website demand by dilatation new website collocation strategy;
According to the lifting demand of cell-level user rate, promote demand algorithm by user rate and draw sub-district proposed arrangement and new website demand;
According to the cell information in the coarctation telephone traffic region of input, draw and promote the comparison of ratio from the soft capacity of difference in functionality before and after corresponding traffic and spectrum analysis and the optimization.
Do with regard to above strategy and algorithm below and elaborate.
1, network topology collocation strategy
See figures.1.and.2, macro base station utilizes Common BCCH that the carrier frequency of GSM900, EGSM, GSM1800 different frequency range is operated in shared BCCH in the sub-district; GSM900 activates GPRS and EDGE, to guarantee the zonal continuous demand that covers main simultaneously GPRS of absorption and EDGE; GSM1800 activates gprs service but does not activate the EDGE business, and it is mainly used in voice telephone traffic demand and the GPRS demand of absorbing; EGSM does not support GPRS and EDGE, and it is mainly used in the voice telephone traffic demand that absorbs.Therefore, can select to increase EGSM or GSM1800, the maximum configurable 6+2+6=14 piece carrier frequency (TRX) in every sub-district according to different business demands; Can select the station, street further to absorb traffic at part traffic hot spot region and carry out effectively replenishing to macro base station, the station, street utilizes Common BCCH that the carrier frequency of GSM900, GSM1800 different frequency range is operated in the maximum configurable 4+4=8 piece TRX in the every sub-district of a shared BCCH in the sub-district; Use the little base station GSM900 of indoor distribution that traffic is shared to the stable zone of indoor user such as office building, university, the little base station of same indoor distribution utilizes Common BCCH increase GSM1800 further to enlarge single cell configuration capacity, and maximum can be to 4+6=10 piece TRX.
Common BCCH technology makes the shared BCCH of different frequency range carrier frequency not only save control channel but also big capacity circuit pool can more effectively absorb the utilance that telephone traffic has increased frequency spectrum.
2, channel configuration strategy
With reference to Fig. 3:
1)CDED_TS：
CDED_TS＝busy_ts_dl
Busy_ts_dl: the descending average channel number that always takies of GPRS when PS busy naturally
The CDED_TS number of channel is configured to busy_ts_dl the descending number of channel that always takies in when PS hurries naturally is configured to the GPRS dedicated channel.
2)CDEF_TS：
CDEF_TS＝CH-cs_reqd_ch_psbh
CH＝cs_reqd_ch_csbh+CDED_TS
Cs_reqd_ch_psbh=cs channels needed for cs traffic in ps busy hour (can calculate the voice channel of demand according to the telephone traffic of sub-district when data service is busy naturally)
Cs_reqd_ch_csbh=cs channels needed for cs traffic in cs busy hour (can calculate the voice channel of demand according to the telephone traffic of sub-district when speech business is busy naturally)
The number of channel of sub-district speech business demand when voice are busy and CDED_TS addition deduct the total channel number number of channel of the number of channel of speech business demand when data are busy naturally as CDEF_TS again as the total channel number of sub-district demand.Can under the prerequisite that does not influence the voice channel demand, satisfy the demand of data service so as far as possible.
3)CMAX_TS：
CMAX_TS＝TCHtotal
TCHtotal=BTS supports total TCHF/TCHD number of channel of gprs service TRX
3, growth rate algorithm and dilatation new website collocation strategy
Just can provide dilatation configuration or the new website demand scheme of sub-district by relevant algorithm in conjunction with set channel configuration strategy and dilatation new website collocation strategy according to speech business and data service growth rate separately, do corresponding introduction with regard to corresponding strategies and algorithm below.
Fig. 4 is the schematic diagram of growth rate algorithm of the present invention, as can be seen from the figure this algorithm draws separately dilatation demand from the increased requirement of speech business and data service by dilatation judging module algorithm respectively, and whether comprehensively newly-increased again BTS and newly-increased website judging module algorithm draw the newly-increased BTS layer or the result of not newly-increased website.
Described dilatation judging module algorithm comprises PS dilatation judging module algorithm and CS dilatation judging module algorithm:
As shown in Figure 5, PS dilatation judging module algorithm (supposing that the PS increased requirement is X%) calculates the dilatation conditions of demand of the different B TS under the same sub-district Seg respectively, the TRX that needs as a certain BTS then directly increases new website when exceeding maximum allowable number, and keeps original GPRS static channel and count CDED and GPRS dynamic channel to count the configuration of CDEF constant.
As shown in Figure 6, CS dilatation judging module algorithm (supposes that the CS increased requirement is Y%, the half rate ratio is h%) the first number of channel of obtaining needs according to increased requirement, obtain required number of physical channels according to the ratio of half rate (can draw or manually input) again, according to the traffic ratio of each BTS required physical channel is dispensed to each BTS under the same sub-district Seg at last according to traffic statistics.
With reference to figure 7a and Fig. 7 b, described newly-increased BTS and newly-increased website judging module algorithm have drawn the number of channel and TRX number that each BTS needs respectively by PS dilatation judging module algorithm and CS dilatation judging module algorithm under the requirement of voice and data service growth rate separately, then directly newly-increased website when if Seg required carrier frequency in sub-district exceeds maximum allowable number (TRX_Need〉TRX_Allowed), newly-increased website TRX_Newsite=TRX_Need-TRX_Allowed; Otherwise divide bts to consider, if bts1 existing channel number then need increase TRX, i.e. TS_bts1＜CDED_TS_New+CH_News_bts1=newly less than the needs number of channel〉Expansion TRX In bts1, then consider newly-increased BTS if the carrier frequency of bts1 has been expired.
User rate promotes demand algorithm
Radio Resource refers to PDCH in the gprs system, PDCH is that all GPRS attached mobile phones are shared and dynamic assignment in the sub-district, divide, distribute according to need with TBF (Temporary Block Flow) form, distribute TBF when needing to transmit when data (referring to the RLC/MAC piece definite), transmitting the back TBF that finishes will discharge.The TBF request of different user can be shared a PDCH, but speed can descend because share.If user rate promotes x% then requires tbf/ts decline x%, so lifting according to user rate, increase the lifting demand that x% satisfies user rate by the GPRS static channel being counted the CDED number of channel, the last number of channel that increases as required decides the demand and the mode of dilatation.
The soft capacity boosting algorithm
The notion of soft capacity: any extra capacity that technology or method drew of overhead provision that can provide is called soft capacity.
1)Common?BCCH
The sub-district number that uses Common BCCH not only effectively to reduce and saved network is reduced to the single layer network structure with multitiered network, and has saved the signaling channel of different frequency range, and the telephone traffic that promotes the sub-district has also promoted the soft capacity of sub-district simultaneously.
Adopting Common BCCH that the lifting of network soft capacity is done with regard to macro base station below illustrates.
As can be seen from the above table GSM900+EGSM (Common BCCH) and GSM900+EGSM (Non-Common BCCH) mutually specific capacity 15.76% lifting is arranged; GSM900+EGSM+GSM1800 (Common BCCH) and GSM900+EGSM+GSM1800 (Non-CommonBCCH) specific capacity mutually have 22.18% lifting.
2) half rate (Half Rate Speech Codec)
Use half rate can promote network capacity, a full speed channel is equivalent to two half-rate channels.
Adopting HR that the lifting of network soft capacity is done with regard to macro base station below illustrates.
| Macro?Site | TRX | TCH | Gos | Erl | Improve |
| GSM900(100％FR) | 6 | 44 | 2％ | 34.68 | |
| GSM900(100％HR) | 6 | 88 | 2％ | 76.38 | 120.24％ |
3) use AMR functional promotion soft capacity
When AMR FR compared with EFR, AMR FR coded system can be born littler C/I value, allowed tighter channeling, thereby promoted whole capacity bearing capacity.The lifting of this capacity can be described as soft capacity.The relation of the soft capacity of AMR FR and AMR permeability can be divided into two aspects: be respectively the AMR permeability 〉=10% and＜10%.AMR permeability and soft capacity concern that schematic diagram as shown in Figure 6.
The i.AMR permeability 〉=10%:
Soft capacity=6.5x^3-28x^ 2+53.5x-32
x＝(r+50)/37.967
The r=AMR permeability
Ii.AMR permeability＜10%:
Soft capacity=0.8273r-0.8273
When network allowed the use of AMR HR, the MOS value of AMR HR can be than AMR FR low about 0.2.And 0.2 decline is equivalent to C/I value decline 2dB.So when using AMR HR, the resulting soft capacity of AMR function can descend 13.62% (10logR-10logr=2dB=〉R/r=antilog (0.2)=1.5848=(R-r)/R=1-1/1.5848)
Fig. 9 is that AMR FR and AMR HR concern schematic diagram.
Take all factors into consideration the usage ratio of AMR FR and AMR HR, the AMR soft capacity is calculated as follows:
The i.AMR permeability 〉=10%:
The * (1-0.1362HR%) of soft capacity=(6.5x^3-28x^ 2+53.5x-32)
x＝(r+50)/37.967
The r=AMR permeability
Ii.AMR permeability＜10%:
The * (1-0.1362HR%) of soft capacity=(0.8273r-0.8273)
Traffic and spectrum analysis algorithm:
1) traffic density:
Traffic?Density＝Sum?of?cells?traffic/Coverage?Area
Coverage Area=X*Y (square km) wherein
X＝[max(xi)，max(yi)]-[min(xi)，max(yi)]
Y＝[min(xi)，max(yi)]-[min(xi)，min(yi)]
Obtain according to the distribution situation of coarctation telephone traffic in-zone cell promptly that sub-district longitude, multiplying each other again apart from difference of latitude draw region area in the zone.Figure 10 is a sub-district of the present invention distribution situation schematic diagram.
2) spectrum efficiency:
Spectral?Efficiency＝Sum?of?cells?traffic/Coverage?Area/Frequency?Bandwidth
More than be preferred embodiment of the present invention, all changes of doing according to technical solution of the present invention when the function that is produced does not exceed the scope of technical solution of the present invention, all belong to protection scope of the present invention.
Claims (8)
1, a kind of coarctation telephone traffic region wireless planning and optimization method is characterized in that: the network capacity that promotes coarctation telephone traffic region by following steps:
Utilize Common BCCH technology that GSM900, GSM1800 and EGSM are combined in the high power capacity of realizing single sub-district in the sub-district, by the multiple site type sub-category multi-level absorption telephone traffic in subregion that combines;
According to the demand of speech business in the coarctation telephone traffic region and data service, sub-district in the zone is made channel configuration in batches by the growth rate algorithm; Speech business, data service growth rate according to expection draw detailed dilatation and new website demand by dilatation new website collocation strategy;
According to the lifting demand of cell-level user rate, promote demand algorithm by user rate and draw sub-district proposed arrangement and new website demand;
According to the cell information in the coarctation telephone traffic region of input, draw and promote the comparison of ratio from the soft capacity of difference in functionality before and after corresponding traffic and spectrum analysis and the optimization.
2, coarctation telephone traffic region wireless planning according to claim 1 and optimization method is characterized in that: described multiple site type comprises outdoor grand station, indoor little base station and station, street.
3, coarctation telephone traffic region wireless planning according to claim 1 and optimization method, it is characterized in that: increase the station, street in the hot spot region with further lifting the whole network capacity, and the TCH frequency of the multiplexing GSM900 of RF hopping technology is adopted at the station, street, to improve the utilance of frequency spectrum resource.
4, coarctation telephone traffic region wireless planning according to claim 1 and optimization method is characterized in that: macro base station utilizes Common BCCH that the carrier frequency of GSM900, EGSM, GSM1800 different frequency range is operated in shared BCCH in the sub-district; GSM900 activates GPRS and EDGE, to guarantee the zonal continuous demand that covers main simultaneously GPRS of absorption and EDGE; GSM1800 activates gprs service but does not activate the EDGE business, is mainly used in voice telephone traffic demand and the GPRS demand of absorbing.
5, coarctation telephone traffic region wireless planning according to claim 1 and optimization method, it is characterized in that: described growth rate algorithm draws separately dilatation demand from the increased requirement of speech business and data service by dilatation judging module algorithm respectively, whether draws the newly-increased BTS layer or the result of not newly-increased website by newly-increased BTS and newly-increased website judging module algorithm again.
6, coarctation telephone traffic region wireless planning according to claim 5 and optimization method is characterized in that: described dilatation judging module algorithm comprises PS dilatation judging module algorithm and CS dilatation judging module algorithm; Described PS dilatation judging module algorithm calculates the dilatation conditions of demand of the different B TS under the same sub-district respectively, the carrier frequency that needs as a certain BTS then directly increases new website when exceeding maximum allowable number, and keeps original GPRS static channel and count CDED and GPRS dynamic channel to count the configuration of CDEF constant; Described CS dilatation judging module algorithm is obtained the number of channel of needs earlier according to increased requirement, obtain required number of physical channels according to the ratio of half rate again, at last required physical channel is dispensed to each BTS under the same sub-district according to the traffic ratio of each BTS.
7, coarctation telephone traffic region wireless planning according to claim 6 and optimization method, it is characterized in that: described newly-increased BTS and newly-increased website judging module algorithm have drawn the number of channel and carrier frequency number that each BTS needs respectively by PS dilatation judging module algorithm and CS dilatation judging module algorithm under the requirement of voice and data service growth rate separately, then directly newly-increased website when if the required carrier frequency in sub-district exceeds maximum allowable number, otherwise divide bts to consider, if bts existing channel number is less than the then newly-increased carrier frequency of the needs number of channel, if the full then newly-increased BTS of the carrier frequency of bts.
8, coarctation telephone traffic region wireless planning according to claim 1 and optimization method, it is characterized in that: user rate promotes demand algorithm and is the lifting according to user rate, increase corresponding GPRS static channel and count CDED, to satisfy the lifting demand of user rate, the last number of channel that increases as required decides the demand and the mode of dilatation.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102036272A (en) * | 2009-09-27 | 2011-04-27 | 中国移动通信集团山东有限公司 | Method and device for optimizing enhanced data rate for GSM evolution (EDGE) network |
| CN102300220A (en) * | 2011-09-16 | 2011-12-28 | 华为技术有限公司 | Method and device for determining deployment position of micro base station |
| CN105611546A (en) * | 2015-12-21 | 2016-05-25 | 中国联合网络通信集团有限公司 | Network expansion method and network expansion evaluation device |
| WO2017067505A1 (en) * | 2015-10-23 | 2017-04-27 | 中国联合网络通信集团有限公司 | Network capacity enlargement method and device |
| CN114125865A (en) * | 2020-08-31 | 2022-03-01 | 中国移动通信集团重庆有限公司 | Planning method and device for 5G base station, computing equipment and storage medium |
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- 2008-12-25 CN CNA2008100724614A patent/CN101437232A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102036272A (en) * | 2009-09-27 | 2011-04-27 | 中国移动通信集团山东有限公司 | Method and device for optimizing enhanced data rate for GSM evolution (EDGE) network |
| CN102036272B (en) * | 2009-09-27 | 2013-04-03 | 中国移动通信集团山东有限公司 | Method and device for optimizing enhanced data rate for GSM evolution (EDGE) network |
| CN102300220A (en) * | 2011-09-16 | 2011-12-28 | 华为技术有限公司 | Method and device for determining deployment position of micro base station |
| CN102300220B (en) * | 2011-09-16 | 2014-01-01 | 华为技术有限公司 | Method and device for determining deployment position of micro base station |
| WO2017067505A1 (en) * | 2015-10-23 | 2017-04-27 | 中国联合网络通信集团有限公司 | Network capacity enlargement method and device |
| US10477413B2 (en) | 2015-10-23 | 2019-11-12 | China United Network Communications Group Company Limited | Method and apparatus for network capacity expansion |
| CN105611546A (en) * | 2015-12-21 | 2016-05-25 | 中国联合网络通信集团有限公司 | Network expansion method and network expansion evaluation device |
| CN105611546B (en) * | 2015-12-21 | 2018-12-28 | 中国联合网络通信集团有限公司 | Device is assessed in a kind of network expansion method and the network capacity extension |
| CN114125865A (en) * | 2020-08-31 | 2022-03-01 | 中国移动通信集团重庆有限公司 | Planning method and device for 5G base station, computing equipment and storage medium |
| CN114125865B (en) * | 2020-08-31 | 2023-10-27 | 中国移动通信集团重庆有限公司 | Planning method and device of 5G base station, computing equipment and storage medium |
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Application publication date: 20090520 |